ironic you say that, many of the Janjaweed militias top officials were actually ex-Libyan/Gaddafi/Islamic Legion mercenaries seeking to legitimize themselves as "Arabs" through service to the militia.

By serving the militia they would in turn be considered "Arab" and therefore afforded higher status in Sudanese society.

Sure he may have done a lot to help black people but he, above all else, also helped maintain the status quo in North Africa that held black people at the bottom of the social ladder, even black Arabs.